<Vid on 21st century video> Water shortage

<Challenge based learning>

Challenges in the 21st century

1. GLOBAL WARMING
2. EXCESSIVE POPULATION GROWTH
3. WATER SHORTAGES
4. DESTRUCTION OF LIFE IN THE OCEANS
5. MASS FAMINE IN ILL-ORGANIZED COUNTRIES
6. THE SPREAD OF DESERTS
7. PANDEMICS AIDS
8. EXTREME POVERTY
9. GROWTH OF SHANTYCITIES
10. UNSTOPPABLE GLOBAL MIGRATIONS
11. NON-STATE ACTORS WITH EXTREME WEAPON
12. VIOLENT RELIGIOUS EXTREMISM
13. RUNAWAY COMPUTER INTELLIGENCE
14. WAR THAT COULD END CIVILIZATION 
15. RISKS TO HOMO SAPIEN’S EXISTENCE 
16. A NEW DARK AGE